Aircon Servicing & Repair in Lisburn

A common rule: if the repair costs more than half the price of a new unit, or the system is over 10-12 years old and needs a compressor or coil replacement, replace it. Newer inverter units are typically 30-50% more efficient, so heavy users recoup part of the cost through lower bills.

A chemical wash uses a cleaning solution to strip dirt and mould from the evaporator coil, blower wheel, and drain pan without dismantling the whole unit. Book one when a normal service no longer fixes weak airflow, bad smells, or water leaking from the indoor unit — typically every 12-18 months for heavily used units.

Most charge a call-out or diagnostic fee that covers travel and the first inspection; many waive or credit it against the repair if you go ahead. Confirm the fee, whether it is credited, and any surcharge for evenings, weekends, or urgent same-day visits before the technician is dispatched.

You can safely wash or replace filters monthly, keep the outdoor unit clear of leaves and debris, and wipe the indoor casing. Anything involving the refrigerant circuit, electrical components, or coil chemicals should be left to a certified technician — refrigerant handling is legally restricted in most countries.

A standard clean-and-check takes 30-45 minutes per indoor unit. A chemical wash takes about an hour per unit, and a full chemical overhaul (where the unit is dismantled) takes 1.5-2 hours per unit. Multi-unit visits are faster per unit.

Yes — an annual service (£60-£150 per unit) is still worth it in the UK climate because units that sit idle grow mould in the coil and drain pan, and seals dry out. Book in spring before the short summer demand spike.

Usually yes for a single outdoor condenser under permitted development rules, but there are limits on siting (e.g. distance from boundaries, not on the principal elevation facing a highway) and flats/leaseholds normally need freeholder consent. Listed buildings and conservation areas need consent.